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參數(shù)資料
| 型號(hào)： | MB90F912BSPMC |
| 廠商： | FUJITSU LTD |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-48 |
| 文件頁(yè)數(shù)： | 6/64頁(yè) |
| 文件大?。?/td> | 1749K |
| 代理商： | MB90F912BSPMC |
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MB90910 Series
14
DS07–13755–2E
■ HANDLING DEVICES
1.
Preventing latch-up
CMOS IC chips may suffer latch-up under the following conditions :
A voltage higher than VCC pin or lower than VSS pin is applied to an input or output pin.
A voltage higher than the rated voltage is applied between VCC pin and VSS pin.
The AVCC power supply is applied before the VCC voltage.
Latch-up may increase the power supply current drastically, causing thermal damage to the device.
Use meticulous care not to exceed the rating.
For the same reason, also be careful not to let the analog power-supply voltage (AVCC, AVR) exceed the
digital power-supply voltage.
2.
Treatment of unused pins
Leaving unused input pins open may result in permanent damage of the device due to misbehavior or latch-
up. Therefore, they must be pulled up or pulled down through resistors. In this case, those resistors should
be more than 2 k
Ω.
Unused bidirectional pins should be set to the output state and can be left open, or the input state with the
above described connection.
3.
Using external clock
The high-speed oscillator pins (X0, X1) can not be used for external clock inputs.
4.
Notes on during operation of PLL clock mode
On this microcontroller, if in case the crystal oscillator breaks off or an external reference clock input stops
while the PLL clock mode is selected, a self-oscillator circuit contained in the PLL may continue its operation
at its self-running frequency. However, Fujitsu will not guarantee results of operations if such failure occurs.
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